地方電網(wǎng)線損分析及降損規(guī)劃
劉航1,沈天時1,李珂2,倪俊康1,劉崇新1
(1 西安交通大學(xué) 電氣工程學(xué)院,陜西 西安 710049;
2 陜西省地方電力(集團(tuán))有限公司,陜西 西安 710061)
摘 要:介紹了中低壓電網(wǎng)電壓質(zhì)量及線損計算方法,分析了典型35 kV 輸電線路的電壓分布及10 kV 配電網(wǎng)電量損耗。采用牛頓拉夫遜算法、等值電阻法,計算了陜西某地區(qū)的電壓分布及線損,并針對線損的影響因素進(jìn)行了研究,提出了相應(yīng)的降損方案,該方案對中低壓配電網(wǎng)的改造具有一定的參考意義。
關(guān)鍵詞:輸配電網(wǎng);電壓平衡;無功優(yōu)化;線損;降損
中圖分類號:TM714 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2016)07-0047-05
Line Loss Analysis and Reducing Plan in Local Power System
LIU Hang1, SHEN Tian-shi1, LI Ke2, NI Jun-kang1, LIU Chong-xin1
(1 School of Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
2 Shanxi Regional Electric Power Group Co., Ltd, Xi’an 710061, China)
Abstract: introduction was made to the calculation method of voltage and line loss in medium and low voltage electrical network. Analysis was made to the voltage distribution of typical 35 kV transmission lines and the power loss of 10 kV distribution network. This paper used Newton-Raphson algorithm and the method of equivalent resistance to compute voltage distribution and line loss in a certain region of Shaanxi. In allusion to the factors of line loss, the corresponding loss reduction scheme was proposed. The scheme has reference significance for medium and low voltage electrical network transform.
Key words: transmission and distribution network; voltage balance; reactive power optimization; line loss; loss reduction
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